Growing an active user base is a top priority for all developers. The
streamlined UX of Google's Identity products help get you more signed-in
users while also strengthening the security of your app. Once your users are
signed in, you can easily deepen your integration with Google's products
like YouTube, Drive, and Contacts. To determine which identity solution is
most appropriate for your project, refer to the table below.
Sign up new users to your Android app with a single tap.
Sign in returning users automatically to your Android app or web
site users on Chrome. Smart Lock will remember your user's password
or whether they signed in through a federated identity provider such
as Facebook or Google.
Quickly streamline your app or website with simple client API
Fast Identity Online Universal 2nd Factor (FIDO U2F) Android
Enable U2F physical security key support for strong second factor authentication in
your Android app, in accordance with the standards defined by the FIDO Alliance.